1. Department 7812, Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research; Blegdamsvej 9 Copenhagen Denmark DK-2100
2. Department 7831, Rigshospitalet, Copenhagen University Hospital; Centre for Research in Intensive Care; Blegdamsvej 9 Copenhagen Denmark DK-2100
3. Aalborg University Hospital; Department of Anaesthesia and Intensive Care Medicine; Hobrovej 18-22 Aalborg Denmark 9000
4. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Sjaelland Denmark DK-2100
5. Holbaek Hospital; Department of Cardiology; Holbaek Denmark 4300
6. Bispebjerg Hospital, University of Copenhagen; Department of Anaesthesiology; Copenhagen NV Denmark
7. Herlev Hospital, University of Copenhagen; Department of Anaesthesiology; Herlev Ringvej 75, Pavillon 10, I65F10 Herlev Denmark 2730